HOW TO USE THIS MANUAL

TM 55-2840-254-23

HOW TO USE THIS MANUAL

This information gives a general description of the entire manual and how to use it along with the repair

parts and special tools list (TM 55-2840-254-23P). If you cannot find information, you cannot do the job.

Learning how to use this manual can help. Check how the manual is put together and how its system

works.

1. DESCRIPTION OF MANUAL

This manual has nine chapters and six appendixes. Each chapter is divided into sections. Each section in

Chapter 1 is divided into paragraphs or tasks. Each section in Chapters 2 thru 9 is divided into tasks. The

tasks tell you what you need and how to do any job. The paragraphs have specific information you will

need to know. The appendixes have general information you will need to know. They list references, ex-

pendable supplies and materials etc.

A. Chapters. Chapters divide the manual into usable engine maintenance groups. They align with

standard groupings shown in the MAC chart. Refer to Appendix B.

B. Sections Sections divide the chapters into smaller groups. They have information about the com-

ponents of parts for which the chapter is titled. They align with components shown in the MAC chart.

Refer to Appendix B.

C. Paragraphs/Tasks. Paragraphs make up some of the sections in Chapter 1. They contain specific

information about the engine. Tasks make up some of the sections in Chapter 1 and the sections in

Chapters 2 thru 9. It is the tasks that have the information you need to do any job. The upper heading

after the task number is the task name. It tells the job to be done in the task. The task heading at the top

of each page specifies the task to be performed and the lowest maintenance level authorized to perform

that task. Tasks to be accomplished by the Aviation Intermediate Maintenance level only will be reflected

by the term (AVIM) at the end of the task heading. If the term (AVIM) is not at the end of the task head-

ing, then either the Aviation Unit or Aviation Intermediate Maintenance (AVUM) or (AVIM) level can

accomplish that task. All paragraphs and tasks are numbered. This helps you find what you need when

you need it. USE THE INDEX TO FIND THE PARAGRAPH OR TASK YOU NEED. DO NOT USE PAGE

NUMBERS. Paragraphs and tasks are numbered as follows:

(1) Two-element numbers are used as shown in the examples:

(2) The first number is the number of the chapter. The second number is the paragraph or task

in that chapter. The two elements are separated by a dash.